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aacdec: check channel count

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Prevent out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 96f452ac64)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-01-27 20:37:27 +01:00
parent 2cac35086c
commit e6ac11e417
1 changed files with 5 additions and 0 deletions
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5
libavcodec/aacdec.c
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@ -568,6 +568,11 @@ static av_cold int aac_decode_init(AVCodecContext *avctx)
output_scale_factor = 1.0;
}
if (avctx->channels > MAX_CHANNELS) {
av_log(avctx, AV_LOG_ERROR, "Too many channels\n");
return AVERROR_INVALIDDATA;
}
AAC_INIT_VLC_STATIC( 0, 304);
AAC_INIT_VLC_STATIC( 1, 270);
AAC_INIT_VLC_STATIC( 2, 550);